Liquid crystal display of line-on-glass type
View Patent ↗A line-on-glass (LOG)-type liquid crystal display device includes a picture display area having liquid crystal cells arranged where gate lines and data lines cross each other, a storage capacitor provided at each of the liquid crystal cells to maintain a charged pixel voltage, and a dummy gate line. (LOG)-type signal lines are provided by a line-on-glass technique outside a picture display area and transmit driving signals required by gate driver integrated circuits to drive the gate lines. The dummy gate line has a smaller resistance value than others of the gate lines.
1. A line-on-glass liquid crystal display device, comprising:
a plurality of data lines;
a plurality of gate lines;
a dummy gate line provided as a first one of the plurality of gate lines;
a picture display area;
a plurality of liquid crystal cells arranged within the picture display area at crossings of the plurality of gate lines and the plurality of data lines;
a storage capacitor arranged within each of the liquid crystal cells for maintaining a charged pixel voltage;
a plurality of gate driver integrated circuits for driving the plurality of gate lines; and
a line-on-glass signal line group arranged outside the picture display area for transmitting driving signals to the plurality of gate driver integrated circuits,
wherein a resistance value of the dummy gate line is smaller than a resistance value of the other of the plurality of gate lines.
2. The line-on-glass liquid crystal display device according to claim 1 , wherein a cross-sectional area of the dummy gate line is greater than a cross-sectional area of each of the plurality of gate lines.
3. The line-on-glass liquid crystal display device according to claim 2 , wherein the dummy gate line is formed from a conductive material having a resistivity value less than a resistivity value of the plurality of gate lines.
4. The line-on-glass liquid crystal display device according to claim 1 , wherein the dummy gate line is formed from a conductive material having a resistivity value less than a resistivity value of the plurality of gate lines.
5. The line-on-glass liquid crystal display device according to claim 1 , wherein the line-on-glass signal line group comprises:
a first gate low voltage line; and
a second gate low voltage line connected between a first gate low voltage line and the dummy gate line, wherein the second gate low voltage line crosses the plurality of gate lines outside the picture display area, wherein the second gate low voltage line is insulated from the plurality of gate lines.
6. The line-on-glass liquid crystal display device according to claim 5 , wherein the second gate low voltage line is formed from a source/drain metal layer and crosses and is insulated from the plurality of gate lines.
7. The line-on-glass liquid crystal display device according to claim 5 , wherein the second gate low voltage line is formed from a metal other than a source/drain metal layer and crosses and is insulated from the source/drain metal layer.
8. The line-on-glass liquid crystal display device according to claim 5 , wherein a cross-sectional area of the second gate low voltage line is greater than a cross-sectional area of the first gate low voltage line.
9. The line-on-glass liquid crystal display device according to claim 8 , wherein the second gate low voltage line is formed from a conductive material having a resistivity value less than a resistivity value of a material from which the first gate low voltage line is formed.
10. The line-on-glass liquid crystal display device according to claim 5 , wherein the second gate low voltage line is formed from a conductive material having a resistivity value less than a resistivity value of a material from which the first gate low voltage line is formed.
11. A liquid crystal display device, comprising:
a plurality of consecutively arranged gate lines;
a liquid crystal display panel including a non-display area;
a signal output terminal;
a first transmission path through which a signal is outputted to a first one of the plurality of consecutively arranged gate lines; and
a second transmission path through which a signal is outputted to a successive one of the plurality of consecutively arranged gate lines, wherein a portion of the first transmission path has a smaller resistance than a portion of the second transmission path.
12. The liquid crystal display device according to claim 11 , wherein the signal comprises a gate low voltage.
13. The liquid crystal display device according to claim 11 , wherein the first and second transmission paths comprise an identical signal line.
14. The liquid crystal display device according to claim 11 , wherein the first transmission path comprises a first line-on-glass signal line, a second line-on-glass signal line, and the first one of the plurality of consecutively arranged gate lines.
15. The liquid crystal display device according to claim 14 , wherein the portion of the first transmission path having the smaller resistance comprises the second line-on-glass signal line.
16. The liquid crystal display device according to claim 15 , wherein the second line-on-glass signal line has a lower resistivity than the first line-on-glass signal line.
17. The liquid crystal display device according to claim 15 , wherein the second line-on-glass signal line has a cross-sectional area greater than a cross-sectional area of the first line-on-glass signal line.
18. The liquid crystal display device according to claim 15 , wherein the second line-on-glass signal line is formed of a material having a lower resistivity than a resistivity value of a material from which the first line-on-glass signal line is formed.
19. The liquid crystal display device according to claim 11 , wherein the second transmission path comprises a first line-on-glass signal line and the successive one of the plurality of consecutively arranged gate lines.
20. The liquid crystal display device according to claim 11 , wherein the portion of the first transmission path having the smaller resistance comprises the first one of the plurality of consecutively arranged gate lines.
21. The liquid crystal display device according to claim 20 , wherein the first one of the plurality of consecutively arranged gate lines has a larger cross-sectional area than a cross-sectional area of the successive one of the plurality of consecutively arranged gate lines.
22. The liquid crystal display device according to claim 20 , wherein the first one of the plurality of consecutively arranged gate lines is formed of a material having a lower resistivity than a resistivity value of a material from which the successive one of the plurality of consecutively arranged gate lines is formed.